Clearance Length

Clearance length, abbreviated as \(d_3\), is the assumed distance between opposing vehicles at the end of passing maneuvers.

• See  \(\large{ PSD }\) = passing sight distance

 

Clearance Length formula

\(\large{ d_3 =  100 \; ft \;to\; 300 \; ft   }\)

Where:

\(\large{ d_3 }\) = clearance length